View mic809-5 datasheet:

MIC809-5 Micrel MIC809-5 Microprocessor Reset Circuit Final Information General Description Features The MIC809-5 is a power supply supervisor that provides • Under-voltage monitor under-voltage monitoring and power-on reset generation in • Power-on reset generation (30ms minimum) an industry standard 3-pin SOT package and pinout. The • Choice of threshold voltages reset output is asserted at power-on and any time the input • Active-low reset output voltage drops below the programmed threshold. It remains • No external components required asserted for 30ms (min.) after the input subsequently rises • Rejects brief input transients back above the threshold boundary. The MIC809-5 has an • Industry standard package and pinout active-low reset output. • 3-pin IttyBitty™ SOT23-3 pack